package lec01.pm;

import java.math.BigInteger;

public class BigIntegerDemo {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		BigInteger a=new BigInteger("100000000000000000000007");
		System.out.println(a.isProbablePrime(100));
		a=BigInteger.ONE;
		for(int i=1;i<=100;i++)
			a=a.multiply(new BigInteger(i+""));		
		System.out.println(a);
		
		

	}

}
